S-90412A130 5.3 mm ID x 10 mm OD DIN 6797 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with external teeth that bite into mating surfaces to prevent loosening under dynamic loads, ensuring long-term joint security.
• Exceptional corrosion resistance from 316 Stainless Steel material, ideal for harsh environments including marine and chemical applications.
• Precise dimensional fit with 5.3 mm ID and 10 mm OD, designed specifically for M5 screws to provide accurate alignment and reliable performance.
• Compliance with DIN 6797 standards guarantees consistent quality, dimensional accuracy, and reliable locking performance in industrial settings.
• RoHS 3 and REACH compliant for safe use in regulated industries, meeting environmental and health standards without compromising performance.
• Optimized thickness (0.5-0.7 mm) balances flexibility and strength, allowing effective spring action while maintaining durability under compression.
• External tooth design maximizes surface contact and grip, reducing maintenance needs and enhancing safety in high-vibration machinery.

Professional Applications & Engineering Value

This M5 external tooth lock washer is engineered to solve critical fastening challenges in demanding industrial environments. Made from 316 Stainless Steel, it offers excellent resistance to corrosion, acids, and high temperatures, making it suitable for applications in chemical processing, marine equipment, and food machinery. The external teeth provide a biting action that digs into both the screw head and workpiece, effectively countering vibration-induced loosening—a common issue in automotive assemblies, heavy machinery, and aerospace components. By adhering to DIN 6797 standards, this washer ensures precise fit and reliable performance, reducing downtime and maintenance costs. Its metric dimensions (5.3 mm ID, 10 mm OD) and compatibility with M5 screws make it a go-to solution for engineers seeking durable, vibration-resistant locking washers that uphold safety and efficiency in dynamic load conditions.

Specification Summary & Compliance

This washer features precise dimensions: Internal Diameter (ID) of 5.3 mm, External Diameter (OD) of 10 mm, and Thickness ranging from 0.5 to 0.7 mm, tailored for M5 screw sizes. It conforms to DIN 6797 standards, ensuring dimensional accuracy and reliable locking performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and environmentally responsible use in various industrial applications.